The cortical organization of speech processing: feedback control and predictive coding the context of a dual-stream model.
The cortical organization of speech processing: feedback control and predictive coding the context of a dual-stream model.
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DOI：
10.1016/j.jcomdis.2012.06.004
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发表时间：
2012-11
影响因子：
1.7
通讯作者：
Hickok, Gregory
中科院分区：
文献类型：
--
作者：
Hickok, Gregory
语音识别是一个主动过程，涉及某种形式的预测编码。这种说法相对来说是没有争议的。不太清楚的是预测的来源。语音处理的双流模型表明，语音感知中存在两种可能的预测编码来源：运动语音系统和词汇概念系统。在这里，我概述了语音处理的双流模型，然后讨论了有关语音识别过程中预测编码来源的证据。我的结论是，与最近的理论趋势相反，背侧感觉运动流并不是可以促进语音识别的前向预测的来源。相反，正是来自腹侧流的前向预测发挥了这一功能。读者将（1）能够解释语音处理的双路径模型，包括背侧流和腹侧流在语言处理中的功能，（2）了解背侧流某些组成部分的干扰如何导致传导性失语症，（3）能够解释运动行为中状态反馈控制的基本原理，以及（4）了解预测编码在运动控制和感知中的作用以及来自两个流的预测编码如何可能产生不同的功能后果。
Speech recognition is an active process that involves some form of predictive coding. This statement is relatively uncontroversial. What is less clear is the source of the prediction. The dual-stream model of speech processing suggests that there are two possible sources of predictive coding in speech perception: the motor speech system and the lexical-conceptual system. Here I provide an overview of the dual-stream model of speech processing and then discuss evidence concerning the source of predictive coding during speech recognition. I conclude that, in contrast to recent theoretical trends, the dorsal sensory-motor stream is not a source of forward prediction that can facilitate speech recognition. Rather, it is forward prediction coming out of the ventral stream that serves this function. Readers will (1) be able to explain the dual route model of speech processing including the function of the dorsal and ventral streams in language processing, (2) understand how disruptions to certain components of the dorsal stream can cause conduction aphasia, (3) be able to explain the fundamental principles of state feedback control in motor behavior, and (4) understand the role of predictive coding in motor control and in perception and how predictive coding coming out of the two streams may have different functional consequences.
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